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linux/Documentation/lguest/Makefile
Rusty Russell 6570c45995 link lguest example launcher non-static
S.Caglar Onur points out that many distributions don't ship a static
zlib.  Unfortunately the launcher currently maps virtual device memory
where shared libraries want to go.

The solution is to pre-scan the args to figure out how much memory we
have, then allocate devices above that, rather than down from the top
possible address.  This also turns out to be simpler.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-24 12:24:59 -07:00

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Makefile

# This creates the demonstration utility "lguest" which runs a Linux guest.
# For those people that have a separate object dir, look there for .config
KBUILD_OUTPUT := ../..
ifdef O
ifeq ("$(origin O)", "command line")
KBUILD_OUTPUT := $(O)
endif
endif
# We rely on CONFIG_PAGE_OFFSET to know where to put lguest binary.
include $(KBUILD_OUTPUT)/.config
LGUEST_GUEST_TOP := ($(CONFIG_PAGE_OFFSET) - 0x08000000)
CFLAGS:=-Wall -Wmissing-declarations -Wmissing-prototypes -O3 -Wl,-T,lguest.lds
LDLIBS:=-lz
all: lguest.lds lguest
# The linker script on x86 is so complex the only way of creating one
# which will link our binary in the right place is to mangle the
# default one.
lguest.lds:
$(LD) --verbose | awk '/^==========/ { PRINT=1; next; } /SIZEOF_HEADERS/ { gsub(/0x[0-9A-F]*/, "$(LGUEST_GUEST_TOP)") } { if (PRINT) print $$0; }' > $@
clean:
rm -f lguest.lds lguest